Polymorphic inlining for some recognized methods in the optimizing compiler.

runtime/vm/intrinsifier_arm.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_ARM.
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/intrinsifier.h"
 
 #include "vm/assembler.h"
@@ skipping 694 matching lines @@
 
 // Implementation:
 //  res = left % right;
 //  if (res < 0) {
 //    if (right < 0) {
 //      res = res - right;
 //    } else {
 //      res = res + right;
 //    }
 //  }
-bool Intrinsifier::Integer_modulo(Assembler* assembler) {
+bool Intrinsifier::Integer_moduloFromInteger(Assembler* assembler) {
   // Check to see if we have integer division
   Label fall_through, subtract;
-  TestBothArgumentsSmis(assembler, &fall_through);
+  __ ldr(R1, Address(SP, + 0 * kWordSize));
+  __ ldr(R0, Address(SP, + 1 * kWordSize));
+  __ orr(TMP, R0, ShifterOperand(R1));
+  __ tst(TMP, ShifterOperand(kSmiTagMask));
+  __ b(&fall_through, NE);
   // R1: Tagged left (dividend).
   // R0: Tagged right (divisor).
   // Check if modulo by zero -> exception thrown in main function.
   __ cmp(R0, ShifterOperand(0));
   __ b(&fall_through, EQ);
   EmitRemainderOperation(assembler);
   // Untagged right in R0. Untagged remainder result in R1.
 
   __ cmp(R1, ShifterOperand(0));
   __ mov(R0, ShifterOperand(R1, LSL, 1), GE);  // Tag and move result to R0.
@@ skipping 964 matching lines @@
   __ Bind(&ok);
   __ Ret();
 
   __ Bind(&fall_through);
   return false;
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM